Los Guilicos Warm Springs emerges at 88°F in Sonoma County wine country, producing water 28 degrees above ambient in a gentle Mediterranean climate. Located near Kenwood at just 340 feet elevation, this warm spring has attracted visitors since the 19th century and sits in one of California's premier wine-growing regions.
A short walk from the road through vineyards and oak savanna reaches Los Guilicos at 340 feet elevation near Kenwood. Warm water emerges into a natural pool surrounded by native oak and grassland typical of Sonoma County's transitional zone between coastal ranges and interior valleys. The 88°F discharge creates a comfortable thermal environment year-round in this mild climate.
History of Los Guilicos Warm Springs
Los Guilicos, meaning \little peaks\" or \"hills\" in Spanish
refers to the terrain where thermal waters have been known since the 19th century. The 28-degree elevation above ambient (59.8°F) reflects moderate geothermal circulation in Sonoma County's geologically complex boundary zone. The warm waters attracted early spa development before modern conservation efforts established current protection."
Is Los Guilicos Warm Springs worth visiting?
Best for
- Warm-water soaking
- Overnight camping trips
Los Guilicos Warm Springs is well suited for warm-water soaking and overnight camping trips.
Annual Precip: 26.5 in
Annual Snow: 0.2 in
December
Air 49°F · Water 88°F · +40° contrast
January
Air 49°F · Water 88°F · +39° contrast
February
Air 51°F · Water 88°F · +37° contrast
December offers 23°F more contrast than July
Recent Temperature
89.6°F
(32.0°C)
Measured Jul 15, 2003
Overview
Nestled between Blue Ridge and Cedar Roughs east of Napa Valley, Lake Berryessa provides ample public recreation opportunities. Popular activities on and around the large, yet uncrowded lake include fishing, boating, water skiing, wake boarding, jet skiing, sailing, swimming, kayaking, canoeing, wildlife viewing, hiking, biking and picnicking. The Dufer Point Visitor Center offers year-round interpretive events and exhibits highlighting natural and cultural resources.
Lake Berrye...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Camping gear
Nearby camping at Oak Shores Day Use Area (Ca)
Trash bag
Pack out what you pack in
USGS Quad: KENWOOD 7.5 · PP 492: 76.0 · NOAA: 34.0 · AMS Map: SANTA ROSA
What is the water temperature at Los Guilicos Warm Springs?
Los Guilicos Warm Springs has a water temperature of 88°F (31°C). This is a warm thermal spring.
Where is Los Guilicos Warm Springs located?
Los Guilicos Warm Springs is located in Sonoma County, California at 340 feet elevation, near Kenwood. Coordinates: 38.3940°N, 122.5520°W.
How do I get to Los Guilicos Warm Springs?
Los Guilicos Warm Springs has Short Walk road access (502 ft from the road).
Can I camp near Los Guilicos Warm Springs?
Yes, Oak Shores Day Use Area (Ca) is located nearby (20.6 miles away).
Is it safe to soak at Los Guilicos Warm Springs?
Los Guilicos Warm Springs is generally safe for soaking at its recorded temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Los Guilicos Warm Springs crowded?
Los Guilicos Warm Springs sees varying levels of visitors depending on the season and day of the week.
What should I bring to Los Guilicos Warm Springs?
Essentials for Los Guilicos Warm Springs: swimsuit, towel, water bottle, camping gear, a trash bag to pack out what you pack in.